Snap-hook.



No. 828,828. PATENTED AUG. 14, 1906.

A. P. MAIZE.

SNAP HOOK. APPLICATION rmm 23.17, 1905.

F I q 779 l2 Witnesses nven or A P e; I t

@MMM by Attorneys verse recesses 13 14 and an internal longitu-- UNITEDSTATES PATENT OFFICE.

SNAP-HOOK.

Specification of Letters Patent.

Patented Aug. 14, 1 906.

Application filed February 17, 1905. Serial No. 246.140.

To all 1072 0111, it may concern:

Be it known that I, ADAM P. MAIZE, a citizen of the United States,residing at Millheim, in the county of Center and State of Pennsylvania,have invented a new and useful Snap-Hook, of which the following is aspecification.

This invention relates to snap-hooks employed upon harness and forsimilar purposes, and has for its object to simplify and improve theconstruction and increase the efficiency of devices of this character.

With this and other objects in View, which will appear as the nature ofthe invention is better understood, the same consists in certain novelfeatures of construction, as hereinafter fully described and claimed.

In the accompanying drawings, forming a part of this specification, andin which corresponding parts are denoted by like designating characters,is illustrated the preferred form of embodiment of the invention capableof carrying the same into practical operation, it being understood thatthe invention is not necessarily limited thereto, as various changes inthe shape, proportions, and general assemblage of the parts may beresorted to without departing from the principle of the invention orsacrificing any of itsadvantages.

In the drawings thus employed, Figure 1 is a perspective view of theimproved device in open position. Fig. 2 is a side elevation of the samein closed position with the detachable side of the casing removed. Fig.3 is a transverse section, enlarged, on the line 3 3 of Fig. 2. Fig. 4is a perspective detail of a portion of the lower part of the device,illustrating a modification in the construction.

The improved device comprises a casing 10, having parallel sides and oneside 11 detachable and secured to the body of the casing, as by a screw12, and with apertures in the ends. The casing 10 and its detachableside 11 are provided at the ends with transdinal rib 26, spaced from oneside of the easing and slidably disposed through the casinglongitudinally, and bearing against the rib 26 is a bolt 15, having anopen hook 16 at one end and a closed loop 17 at the other end, the loopand hook being at all times eXteriorly of the casing. When the bolt isdisposed in one of its two positions, the closed loop 17 will enter therecess 14, as in Fig. 1, and when the bolt is disposed in the other ofits two positions the interior of the hook 16 will register with therecess 13, as shown in Fig. 2.

The point 18 of the hook 16 is notched to fit the inner corner of thetop of the casing 10, as in Fig. 2, to increase the grip between thehook and casing when the hook is closed.

The bolt 15 is provided with a shoulder 19 on one side, against which aUshaped spring 23 bears to maintain the bolt yieldably in open position,as shown in Fig. 1, and the bolt is also provided with a lateral lip 21upon the opposite side, with which a projection 22 on the resilientmember 23 engages when the bolt is closed, the free end 24 of theresilient member bearing movably against the end wall of the casing atone side of the recess 13, as in Fig. 2. The U-shaped spring is thusfirmly supported between the intermediate rib 26 and the adjacent wallof the casing and requires no other holding means. The strain on thebolt is thus borne by the offset or projection 22, which is relativelylarge and strong, so that it will not be crushed by any pressure towhich it may be subjected. The inner face 27 of the portion 22 of the U-shaped spring is inclined so as to form a barbed terminal against whichthe lip 21 of the bolt 15 operates when closing to cause the springmember to yield and permit the lip to pass to its seat beneath thebarbed portion. The closing action of the bolt is thus automatic. Theresilient member 23 is also pr0- vided with a stud or button 25,projecting through an aperture in the detachable side 1 1 so that theresilient member may be moved laterally to detach the ortion 22 andrelease the bolt, which will then be automatically opened by the springor moved intothe position shown in Fig. 1. i

When the device is to be used, the button 25 is actuated to release thebolt and the hook 16 engaged with the ring or other part of the harnessor other structure and the hook forcibly compressed into the casing 10or the casing forcibly moved toward the hook until the lip 21 isautomatically engaged by the enlargement 22 of the resilient member andthe notch 18 likewise engaged by the ad jacent portion of the casing.The closing of the hook is thus very quickly accomplished and requiresno manipulation of parts except the compression of the casing upon thebolt, or vice versa, and the bolt can be very readily released by merelymoving the button 25 laterally for a short distance.

IIO

The device is simple in construction, strong and durable and veryefficientin action, and can be readily adapted to all the uses for whichany other form of snap-hook is employed.

Minor changes may be made in the device as, for instance, substitutinganother form of spring than that shown at or providing a hook for theloop 1 7-without departing from theprinciples of the invention, as willbeobvious.

Having thus described the invention, what is claimed is 1. Acasinghaving apertures formed in the opposite ends thereof and providedwith a longitudinally-disposed rib spaced from one side of the casing, abolt slidably mounted in the casing and having its opposite endsextended through said apertures and provided with draft-engagingimeans,said bolt having a shoulder on one side thereof and a stop-lip extendinglaterally from the opposite sideof the bolt, a spring-arm interposedbetween oneside of the rib and the adjacent wall of the casing andprovided with a barbed terminal for engagement with the lip, and aspring disposed'on the opposite side of said rib and bearing against theshoulder on the bolt.

posite endsthereof, a longitudinally-disposed .rib arranged within thecasing and spaced from one'of the side walls thereof, a-bolt slidablymounted in the casing and having its opposite ends extended through saidapertures and provided with draft-engaging means,

said bolt having a shoulder on one side there-- of and a stop-lipextending laterally from the opposite-side of the bolt, a U-shapedspring- 'arm bearing against one side of the rib and the adjacent sidewall of the casing and having one of its side members extended and provided with a barbed terminal for engagement with the stop-lip, and aspring interposed between the shoulderand one end'of the :casing.

3. A casinghaving apertures formed in the opposite ends thereof, a boltslidablyimounti ed in the casing and having its-opposite ends extendedthrough said apertures andprovided with draft-engaging means, said bolthaving ashoulder on one-side thereof and a stop-lipextendinglaterallyfrom theopposite side of the bolt, a spring-armsupported within thecasing and having-one'end thereof provided with abarbed terminal forengage- ADAM P: 'MAIZE.

Witnesses:

WM. S. SHELTON'. WM. S. MAIZE.

